What are the side effects of refractive surgery?

With the increasing number of electronic products, many students have become dependent on them. Excessive use of electronic products will lead to eye fatigue, which will cause myopia. Some people have very poor physical fitness, which will make the condition more serious. Although refractive surgery can effectively treat myopia, it is also prone to some sequelae. So what are the sequelae of refractive surgery?

First, what are the side effects of refractive surgery? Insufficient correction and residual myopia after surgery, or hyperopia due to correction exceeding the expected degree, are the most common side effects. Depending on the situation, correction can be performed again after the degree stabilizes. Light sensitivity: Sensitivity to light increases within 3 to 6 months after surgery, but it will gradually disappear after 6 months, and in rare cases it will persist. Glare or diplopia is more common in the early stages of surgery, especially at night when pupils become dilated. Most of them will disappear slowly, but only a few will persist. Poor epidermal healing is common in PRK and can be aided by therapeutic contact lenses and artificial tears. If the impurities under the corneal flap are mild, they will not affect vision. If they are severe, the corneal flap must be opened to remove them. Infection: The chance of wound infection due to postoperative uncleanliness or surgery is very low. As long as it is discovered early, most cases can be controlled with medication. Tear secretion will decrease after surgery, which may cause dry eye symptoms or aggravate the symptoms of people who already have dry eyes. Artificial tears must be used for treatment, which can improve the condition in about 3-6 months.

Second, dry eyes: dry eyes and sore eyes occur after surgery. The truth: Some patients experience dry eye symptoms after surgery. This is because the corneal nerves are severed during surgery, resulting in temporary uneven tear secretion. In addition, the corneal curvature changes after surgery, making it more difficult for the tear film to adhere to the corneal surface, thus increasing the symptoms of dry eyes. This type of situation often occurs in patients who underwent early excimer laser surgery and semi-femtosecond surgery, and rarely occurs in full-femtosecond surgery. This is a normal reaction after surgery. If you take medication as prescribed by your doctor, the dry eye symptoms will usually disappear gradually in 3-6 months.

What are the side effects of refractive surgery? Postoperative astigmatism: There was no astigmatism originally, but it appeared after the operation. A small number of patients reported that they did not have astigmatism originally, but developed astigmatism after surgery. This is largely related to the short-term effects caused by postoperative corneal edema. Due to individual differences, everyone reacts differently to surgery. Some people will experience corneal edema after surgery, resulting in double vision and astigmatism symptoms. Generally speaking, this type of condition will gradually disappear as the corneal edema subsides.